[media] media: Check for active links on pads with MEDIA_PAD_FL_MUST_CONNECT flag
Do not allow streaming if a pad with MEDIA_PAD_FL_MUST_CONNECT flag is not connected by an active link. This patch makes it possible to avoid drivers having to check for the most common case of link state validation: a sink pad that must be connected. Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi> Tested-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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